Fixed compatibility with synatra connector

src/main/java/com/minelittlepony/unicopia/Race.java

@@ -42,8 +42,8 @@ public record Race (
         boolean canInteractWithClouds
     ) implements Affine {
     public static final String DEFAULT_ID = "unicopia:unset";
-    public static final Registry<Race> REGISTRY = RegistryUtils.createDefaulted(Unicopia.id("race"), DEFAULT_ID);
+    public static final Registry<Race> REGISTRY = RegistryUtils.createSynced(Unicopia.id("race"), DEFAULT_ID);
-    public static final Registry<Race> COMMAND_REGISTRY = RegistryUtils.createDefaulted(Unicopia.id("race/grantable"), DEFAULT_ID);
+    public static final Registry<Race> COMMAND_REGISTRY = RegistryUtils.createSynced(Unicopia.id("race/grantable"), DEFAULT_ID);
     public static final RegistryKey<? extends Registry<Race>> REGISTRY_KEY = REGISTRY.getKey();
     private static final DynamicCommandExceptionType UNKNOWN_RACE_EXCEPTION = new DynamicCommandExceptionType(id -> Text.translatable("commands.race.fail", id));
     private static final Function<Race, Composite> COMPOSITES = Util.memoize(race -> new Composite(race, null, null));

src/main/java/com/minelittlepony/unicopia/ability/Abilities.java

@@ -18,7 +18,7 @@ import net.minecraft.network.codec.PacketCodecs;
 import net.minecraft.registry.Registry;
 
 public interface Abilities {
-    Registry<Ability<?>> REGISTRY = RegistryUtils.createSimple(Unicopia.id("abilities"));
+    Registry<Ability<?>> REGISTRY = RegistryUtils.createSynced(Unicopia.id("abilities"));
     PacketCodec<RegistryByteBuf, Ability<?>> PACKET_CODEC = PacketCodecs.registryValue(REGISTRY.getKey());
     Map<AbilitySlot, Set<Ability<?>>> BY_SLOT = new EnumMap<>(AbilitySlot.class);
     BiFunction<AbilitySlot, Race.Composite, List<Ability<?>>> BY_SLOT_AND_COMPOSITE_RACE = Util.memoize((slot, race) -> {

src/main/java/com/minelittlepony/unicopia/ability/magic/MultiSpellSlot.java

@@ -149,16 +149,14 @@ class MultiSpellSlot implements SpellSlots, NbtSerialisable {
         }
 
         @Override
-        public void read(ByteBuf buffer, WrapperLookup lookup) {
+        public void read(RegistryByteBuf buffer, WrapperLookup lookup) {
             byte contentType = buffer.readByte();
             if (contentType == 1) {
                 readTrackedNbt(PacketCodecs.NBT_COMPOUND.decode(buffer), lookup);
             } else {
                 T spell = this.spell.get();
                 if (spell != null) {
-                    spell.getDataTracker().load(MsgTrackedValues.TrackerEntries.PACKET_CODEC.decode(
+                    spell.getDataTracker().load(MsgTrackedValues.TrackerEntries.PACKET_CODEC.decode(buffer), buffer.getRegistryManager());
-                            buffer instanceof RegistryByteBuf r ? r : new RegistryByteBuf(buffer, owner.asEntity().getRegistryManager())
-                    ), lookup);
                 }
             }
         }

src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/SpellType.java

@@ -44,13 +44,14 @@ import net.minecraft.server.command.ServerCommandSource;
 
 public final class SpellType<T extends Spell> implements Affine, SpellPredicate<T> {
     public static final Identifier EMPTY_ID = Unicopia.id("none");
-    public static final SpellType<?> EMPTY_KEY = builder(t -> null).affinity(Affinity.NEUTRAL).color(0xFFFFFF).unobtainable().build(EMPTY_ID);
 
-    public static final Registry<SpellType<?>> REGISTRY = RegistryUtils.createSimple(Unicopia.id("spells"));
+    public static final Registry<SpellType<?>> REGISTRY = RegistryUtils.createSynced(Unicopia.id("spells"), EMPTY_ID.toString());
     public static final RegistryKey<? extends Registry<SpellType<?>>> REGISTRY_KEY = REGISTRY.getKey();
     public static final Codec<SpellType<?>> CODEC = REGISTRY.getCodec();
     public static final PacketCodec<RegistryByteBuf, SpellType<?>> PACKET_CODEC = PacketCodecs.registryValue(REGISTRY_KEY);
 
+    public static final SpellType<?> EMPTY_KEY = register(EMPTY_ID.getPath(), builder(t -> null).affinity(Affinity.NEUTRAL).color(0xFFFFFF).unobtainable());
+
     private static final DynamicCommandExceptionType UNKNOWN_SPELL_TYPE_EXCEPTION = new DynamicCommandExceptionType(id -> Text.translatable("spell_type.unknown", id));
 
     public static final SpellType<PlacementControlSpell> PLACE_CONTROL_SPELL = register("place_controller", SpellType.<PlacementControlSpell>builder(PlacementControlSpell::new).affinity(Affinity.NEUTRAL).unobtainable().stackable().shape(GemstoneItem.Shape.DONUT));

src/main/java/com/minelittlepony/unicopia/diet/affliction/AfflictionType.java

@@ -15,7 +15,7 @@ import net.minecraft.util.Util;
 
 public record AfflictionType<T extends Affliction>(Identifier id, MapCodec<T> codec, PacketCodec<? super RegistryByteBuf, T> packetCodec) {
     public static final String DEFAULT_ID = "unicopia:apply_status_effect";
-    public static final Registry<AfflictionType<?>> REGISTRY = RegistryUtils.createDefaulted(Unicopia.id("affliction_type"), DEFAULT_ID);
+    public static final Registry<AfflictionType<?>> REGISTRY = RegistryUtils.createSynced(Unicopia.id("affliction_type"), DEFAULT_ID);
     public static final Codec<Affliction> CODEC = CodecUtils.apply(REGISTRY.getCodec()
             .dispatch("type", Affliction::getType, AfflictionType::codec), elementCodec -> Codec
             .withAlternative(elementCodec, Codec.list(elementCodec), afflictions -> {

src/main/java/com/minelittlepony/unicopia/mixin/forgified/MixinIForgeBoat.java

@@ -10,7 +10,7 @@ import net.minecraft.fluid.Fluids;
 import net.minecraft.registry.tag.FluidTags;
 
 @Pseudo
-@Mixin(targets = "net.minecraftforge.common.extensions.IForgeBoat")
+@Mixin(targets = "net.neoforged.neoforge.common.extensions.IAbstractBoatExtension")
 interface MixinIForgeBoat {
     @ModifyVariable(
             method = "canBoatInFluid(Lnet/minecraft/fluid/FluidState;)Z",

src/main/java/com/minelittlepony/unicopia/mixin/forgified/MixinPacketAndPayloadAcceptor.java

@@ -0,0 +1,15 @@
+package com.minelittlepony.unicopia.mixin.forgified;
+
+import java.util.function.Consumer;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Pseudo;
+
+import net.minecraft.network.listener.ClientCommonPacketListener;
+import net.minecraft.network.packet.Packet;
+
+@Pseudo
+@Mixin(targets = "net.neoforged.neoforge.network.bundle.PacketAndPayloadAcceptor")
+interface MixinPacketAndPayloadAcceptor<L extends ClientCommonPacketListener> extends Consumer<Packet<? extends L>> {
+
+}

src/main/java/com/minelittlepony/unicopia/mixin/server/MixinEntityTrackerEntry.java

@@ -6,13 +6,13 @@ import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Coerce;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 import com.minelittlepony.unicopia.network.track.Trackable;
 
 import net.minecraft.entity.Entity;
-import net.minecraft.network.listener.ClientPlayPacketListener;
 import net.minecraft.network.packet.Packet;
 import net.minecraft.server.network.EntityTrackerEntry;
 import net.minecraft.server.network.ServerPlayerEntity;
@@ -29,8 +29,12 @@ abstract class MixinEntityTrackerEntry {
         Trackable.of(entity).getDataTrackers().tick(this::sendSyncPacket);
     }
 
-    @Inject(method = "sendPackets", at = @At("RETURN"))
+    @SuppressWarnings("unchecked")
-    private void unicopia_onSendPackets(ServerPlayerEntity player, Consumer<Packet<ClientPlayPacketListener>> sender, CallbackInfo info) {
+    @Inject(method = "sendPackets", at = @At("RETURN"), require = 0)
-        Trackable.of(entity).getDataTrackers().sendInitial(player, sender);
+    private void unicopia_onSendPackets(ServerPlayerEntity player, @Coerce Object sender, CallbackInfo info) {
+        // NEO: Consumer<Packet<ClientPlayPacketListener>> replaced with PacketAndPayloadAcceptor<ClientPlayPacketListener>
+        if (sender instanceof Consumer s) {
+            Trackable.of(entity).getDataTrackers().sendInitial(player, s);
+        }
     }
 }

src/main/java/com/minelittlepony/unicopia/mixin/server/MixinServerPlayerEntity.java

@@ -42,10 +42,14 @@ abstract class MixinServerPlayerEntity extends PlayerEntity implements ScreenHan
         get().copyFrom(((Equine.Container<Pony>)oldPlayer).get(), alive);
     }
 
-    @Inject(method = "trySleep(Lnet/minecraft/util/math/BlockPos;)Lcom/mojang/datafixers/util/Either;", at = @At(
+    @Inject(method = {
+            "trySleep(Lnet/minecraft/util/math/BlockPos;)Lcom/mojang/datafixers/util/Either;",
+            // NEO: https://github.com/neoforged/NeoForge/blob/62eb61a8e0c726faa30eaa3f4998ba1101368ee4/patches/net/minecraft/server/level/ServerPlayer.java.patch#L77
+            "lambda$0()Lcom/mojang/datafixers/util/Either;"
+    }, at = @At(
             value = "FIELD",
             target = "net/minecraft/entity/player/PlayerEntity$SleepFailureReason.NOT_POSSIBLE_NOW:Lnet/minecraft/entity/player/PlayerEntity$SleepFailureReason;"
-    ), cancellable = true)
+    ), cancellable = true, require = 0)
     private void onTrySleep(BlockPos pos, CallbackInfoReturnable<Either<PlayerEntity.SleepFailureReason, Unit>> info) {
         if (get().getSpecies().isNocturnal() && get().asWorld().getGameRules().getBoolean(UGameRules.DO_NOCTURNAL_BAT_PONIES)) {
             ((PlayerEntity)this).sendMessage(Text.translatable("block.unicopia.bed.no_sleep.nocturnal"), true);

src/main/java/com/minelittlepony/unicopia/network/track/DataTracker.java

@@ -9,13 +9,14 @@ import java.util.Optional;
 
 import com.minelittlepony.unicopia.util.Untyped;
 
-import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
 import it.unimi.dsi.fastutil.ints.IntOpenHashSet;
 import it.unimi.dsi.fastutil.ints.IntSet;
 import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import net.minecraft.network.RegistryByteBuf;
 import net.minecraft.network.codec.PacketCodec;
 import net.minecraft.network.codec.PacketCodecs;
+import net.minecraft.registry.DynamicRegistryManager;
 import net.minecraft.registry.RegistryWrapper.WrapperLookup;
 
 public class DataTracker {
@@ -86,7 +87,7 @@ public class DataTracker {
             return getInitialPairs(lookup);
         }
 
-        Map<Integer, ByteBuf> updates = writePersistentObjects(lookup, false);
+        Map<Integer, byte[]> updates = writePersistentObjects(lookup, false);
 
         if (dirtyIndices.isEmpty() && updates.isEmpty()) {
             return Optional.empty();
@@ -98,21 +99,21 @@ public class DataTracker {
         for (int i : toSend) {
             pairs.add(codecs.get(i));
         }
-        return Optional.of(new MsgTrackedValues.TrackerEntries(id, false, pairs, Untyped.cast(updates)));
+        return Optional.of(new MsgTrackedValues.TrackerEntries(id, false, pairs, updates));
     }
 
-    private Map<Integer, ByteBuf> writePersistentObjects(WrapperLookup lookup, boolean initial) {
+    private Map<Integer, byte[]> writePersistentObjects(WrapperLookup lookup, boolean initial) {
-        Map<Integer, ByteBuf> updates = new HashMap<>();
+        Map<Integer, byte[]> updates = new HashMap<>();
         for (int i = 0; i < persistentObjects.size(); i++) {
             TrackableObject<?> o = persistentObjects.get(i);
             TrackableObject.Status status = initial ? TrackableObject.Status.NEW : o.getStatus();
             int id = i;
-            o.write(status, lookup).ifPresent(data -> updates.put(id, data));
+            o.write(status, lookup).ifPresent(data -> updates.put(id, data.copy().array()));
         }
         return updates;
     }
 
-    public synchronized void load(MsgTrackedValues.TrackerEntries values, WrapperLookup lookup) {
+    public synchronized void load(MsgTrackedValues.TrackerEntries values, DynamicRegistryManager lookup) {
         if (values.wipe()) {
             codecs.clear();
             codecs.addAll(values.values());
@@ -129,7 +130,7 @@ public class DataTracker {
         for (var entry : values.objects().entrySet()) {
             TrackableObject<?> o = persistentObjects.get(entry.getKey());
             if (o != null) {
-                o.read(entry.getValue(), lookup);
+                o.read(new RegistryByteBuf(Unpooled.wrappedBuffer(entry.getValue()), lookup), lookup);
             }
         }
     }

src/main/java/com/minelittlepony/unicopia/network/track/DataTrackerManager.java

@@ -6,16 +6,17 @@ import java.util.function.Consumer;
 import java.util.function.Supplier;
 
 import com.minelittlepony.unicopia.network.Channel;
+
 import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import net.minecraft.entity.Entity;
 import net.minecraft.network.listener.ClientPlayPacketListener;
 import net.minecraft.network.packet.Packet;
-import net.minecraft.registry.RegistryWrapper.WrapperLookup;
+import net.minecraft.registry.DynamicRegistryManager;
 import net.minecraft.server.network.ServerPlayerEntity;
 
 public class DataTrackerManager {
     private final Entity entity;
-    private final WrapperLookup lookup;
+    private final DynamicRegistryManager lookup;
     final boolean isClient;
     private final List<DataTracker> trackers = new ObjectArrayList<>();
     private final List<ObjectTracker<?>> objectTrackers = new ObjectArrayList<>();
@@ -44,13 +45,11 @@ public class DataTrackerManager {
         packetEmitters.add((sender, initial) -> {
             var update = initial ? tracker.getInitialPairs(lookup) : tracker.getDirtyPairs(lookup);
             if (update.isPresent()) {
-                try (var payload = new MsgTrackedValues(
+                sender.accept(Channel.SERVER_TRACKED_ENTITY_DATA.toPacket(new MsgTrackedValues(
                         entity.getId(),
                         Optional.empty(),
                         update
-                )) {
+                )));
-                    sender.accept(Channel.SERVER_TRACKED_ENTITY_DATA.toPacket(payload));
-                }
             }
         });
         return tracker;
@@ -62,13 +61,11 @@ public class DataTrackerManager {
         packetEmitters.add((sender, initial) -> {
             var update = initial ? tracker.getInitialPairs(lookup) : tracker.getDirtyPairs(lookup);
             if (update.isPresent()) {
-                try (var payload = new MsgTrackedValues(
+                sender.accept(Channel.SERVER_TRACKED_ENTITY_DATA.toPacket(new MsgTrackedValues(
                         entity.getId(),
                         update,
                         Optional.empty()
-                )) {
+                )));
-                    sender.accept(Channel.SERVER_TRACKED_ENTITY_DATA.toPacket(payload));
-                }
             }
         });
         return tracker;

src/main/java/com/minelittlepony/unicopia/network/track/MsgTrackedValues.java

@@ -1,6 +1,5 @@
 package com.minelittlepony.unicopia.network.track;
 
-import java.io.Closeable;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -10,10 +9,8 @@ import java.util.Optional;
 import java.util.Set;
 import java.util.UUID;
 
-import com.minelittlepony.unicopia.util.serialization.PacketCodecUtils;
 import com.sollace.fabwork.api.packets.Handled;
 
-import io.netty.buffer.ByteBuf;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.network.RegistryByteBuf;
@@ -25,7 +22,7 @@ public record MsgTrackedValues(
         int owner,
         Optional<TrackerObjects> updatedObjects,
         Optional<TrackerEntries> updatedTrackers
-) implements Handled<PlayerEntity>, AutoCloseable {
+) implements Handled<PlayerEntity> {
     public static final PacketCodec<RegistryByteBuf, MsgTrackedValues> PACKET_CODEC = PacketCodec.tuple(
             PacketCodecs.INTEGER, MsgTrackedValues::owner,
             PacketCodecs.optional(TrackerObjects.PACKET_CODEC), MsgTrackedValues::updatedObjects,
@@ -35,54 +32,28 @@ public record MsgTrackedValues(
 
     @Override
     public void handle(PlayerEntity sender) {
-        try (this) {
+        Entity entity = sender.getWorld().getEntityById(owner);
-            Entity entity = sender.getWorld().getEntityById(owner);
+        if (entity instanceof Trackable trackable) {
-            if (entity instanceof Trackable trackable) {
+            trackable.getDataTrackers().load(this);
-                trackable.getDataTrackers().load(this);
-            }
         }
     }
 
-    public record TrackerObjects(int id, Set<UUID> removedValues, Map<UUID, ByteBuf> values) implements Closeable {
+    public record TrackerObjects(int id, Set<UUID> removedValues, Map<UUID, byte[]> values) {
         public static final PacketCodec<RegistryByteBuf, TrackerObjects> PACKET_CODEC = PacketCodec.tuple(
                 PacketCodecs.INTEGER, TrackerObjects::id,
                 Uuids.PACKET_CODEC.collect(PacketCodecs.toCollection(HashSet::new)), TrackerObjects::removedValues,
-                PacketCodecs.map(HashMap::new, Uuids.PACKET_CODEC, PacketCodecUtils.REGISTRY_BUFFER), TrackerObjects::values,
+                PacketCodecs.map(HashMap::new, Uuids.PACKET_CODEC, PacketCodecs.BYTE_ARRAY), TrackerObjects::values,
                 TrackerObjects::new
         );
-
-        @Override
-        public void close() {
-            values.values().forEach(buf -> {
-                if (buf.refCnt() > 0) {
-                    buf.release();
-                }
-            });
-        }
     }
 
-    public record TrackerEntries(int id, boolean wipe, List<DataTracker.Pair<?>> values, Map<Integer, ByteBuf> objects) implements Closeable {
+    public record TrackerEntries(int id, boolean wipe, List<DataTracker.Pair<?>> values, Map<Integer, byte[]> objects) {
         public static final PacketCodec<RegistryByteBuf, TrackerEntries> PACKET_CODEC = PacketCodec.tuple(
                 PacketCodecs.INTEGER, TrackerEntries::id,
                 PacketCodecs.BOOL, TrackerEntries::wipe,
                 DataTracker.Pair.PACKET_CODEC.collect(PacketCodecs.toCollection(ArrayList::new)), TrackerEntries::values,
-                PacketCodecs.map(HashMap::new, PacketCodecs.INTEGER, PacketCodecUtils.REGISTRY_BUFFER), TrackerEntries::objects,
+                PacketCodecs.map(HashMap::new, PacketCodecs.INTEGER, PacketCodecs.BYTE_ARRAY), TrackerEntries::objects,
                 TrackerEntries::new
         );
-
-        @Override
-        public void close() {
-            objects.values().forEach(buf -> {
-                if (buf.refCnt() > 0) {
-                    buf.release();
-                }
-            });
-        }
-    }
-
-    @Override
-    public void close() {
-        updatedObjects.ifPresent(TrackerObjects::close);
-        updatedObjects.ifPresent(TrackerObjects::close);
     }
 }

src/main/java/com/minelittlepony/unicopia/network/track/ObjectTracker.java

@@ -12,8 +12,10 @@ import java.util.function.Supplier;
 import org.jetbrains.annotations.Nullable;
 
 import com.minelittlepony.unicopia.network.track.TrackableObject.Status;
-import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
 import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
+import net.minecraft.network.RegistryByteBuf;
+import net.minecraft.registry.DynamicRegistryManager;
 import net.minecraft.registry.RegistryWrapper.WrapperLookup;
 
 public class ObjectTracker<T extends TrackableObject<T>> {
@@ -89,10 +91,10 @@ public class ObjectTracker<T extends TrackableObject<T>> {
             return Optional.empty();
         }
 
-        Map<UUID, ByteBuf> updates = new HashMap<>();
+        Map<UUID, byte[]> updates = new HashMap<>();
         quickAccess.entrySet().forEach(object -> {
             object.getValue().write(Status.NEW, lookup).ifPresent(data -> {
-                updates.put(object.getKey(), data);
+                updates.put(object.getKey(), data.copy().array());
             });
         });
 
@@ -101,7 +103,7 @@ public class ObjectTracker<T extends TrackableObject<T>> {
 
     synchronized Optional<MsgTrackedValues.TrackerObjects> getDirtyPairs(WrapperLookup lookup) {
         if (!trackedObjects.isEmpty()) {
-            Map<UUID, ByteBuf> updates = new HashMap<>();
+            Map<UUID, byte[]> updates = new HashMap<>();
             Set<UUID> removedTrackableObjects = new HashSet<>();
             trackedObjects.entrySet().removeIf(object -> {
                 TrackableObject.Status status = object.getValue().getStatus();
@@ -110,7 +112,7 @@ public class ObjectTracker<T extends TrackableObject<T>> {
                     return true;
                 }
                 object.getValue().write(status, lookup).ifPresent(data -> {
-                    updates.put(object.getKey(), data);
+                    updates.put(object.getKey(), data.copy().array());
                 });
                 return false;
             });
@@ -124,7 +126,7 @@ public class ObjectTracker<T extends TrackableObject<T>> {
         return Optional.empty();
     }
 
-    synchronized void load(MsgTrackedValues.TrackerObjects objects, WrapperLookup lookup) {
+    synchronized void load(MsgTrackedValues.TrackerObjects objects, DynamicRegistryManager lookup) {
         objects.removedValues().forEach(removedId -> {
             T o = trackedObjects.remove(removedId);
             if (o != null) {
@@ -137,7 +139,8 @@ public class ObjectTracker<T extends TrackableObject<T>> {
                 o = constructor.get();
                 trackedObjects.put(id, o);
             }
-            o.read(data, lookup);
+
+            o.read(new RegistryByteBuf(Unpooled.wrappedBuffer(data), lookup), lookup);
         });
         quickAccess = Map.copyOf(trackedObjects);
     }

src/main/java/com/minelittlepony/unicopia/network/track/TrackableObject.java

@@ -5,13 +5,14 @@ import java.util.Optional;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import net.minecraft.nbt.NbtCompound;
+import net.minecraft.network.RegistryByteBuf;
 import net.minecraft.network.codec.PacketCodecs;
 import net.minecraft.registry.RegistryWrapper.WrapperLookup;
 
 public interface TrackableObject<T extends TrackableObject<T>> {
     Status getStatus();
 
-    default void read(ByteBuf buffer, WrapperLookup lookup) {
+    default void read(RegistryByteBuf buffer, WrapperLookup lookup) {
         readTrackedNbt(PacketCodecs.NBT_COMPOUND.decode(buffer), lookup);
     }
 

src/main/java/com/minelittlepony/unicopia/util/RegistryUtils.java

@@ -8,6 +8,7 @@ import com.google.common.base.Predicates;
 import com.mojang.serialization.Lifecycle;
 
 import net.fabricmc.fabric.api.event.registry.FabricRegistryBuilder;
+import net.fabricmc.fabric.api.event.registry.RegistryAttribute;
 import net.minecraft.registry.tag.TagKey;
 import net.minecraft.util.Identifier;
 import net.minecraft.util.Util;
@@ -22,8 +23,16 @@ public interface RegistryUtils {
         return FabricRegistryBuilder.from(new SimpleRegistry<T>(RegistryKey.ofRegistry(id), Lifecycle.stable())).buildAndRegister();
     }
 
-    static <T> Registry<T> createDefaulted(Identifier id, String def) {
+    static <T> Registry<T> createSynced(Identifier id) {
-        return FabricRegistryBuilder.from(new SimpleDefaultedRegistry<T>(def, RegistryKey.ofRegistry(id), Lifecycle.stable(), false)).buildAndRegister();
+        return FabricRegistryBuilder.from(new SimpleRegistry<T>(RegistryKey.ofRegistry(id), Lifecycle.stable()))
+                .attribute(RegistryAttribute.SYNCED)
+                .buildAndRegister();
+    }
+
+    static <T> Registry<T> createSynced(Identifier id, String def) {
+        return FabricRegistryBuilder.from(new SimpleDefaultedRegistry<T>(def, RegistryKey.ofRegistry(id), Lifecycle.stable(), false))
+                .attribute(RegistryAttribute.SYNCED)
+                .buildAndRegister();
     }
 
     static <T> RegistryEntryList<T> entriesForTag(World world, TagKey<T> key) {

src/main/java/com/minelittlepony/unicopia/util/serialization/PacketCodecUtils.java

@@ -9,9 +9,7 @@ import java.util.function.Function;
 import java.util.function.IntFunction;
 
 import io.netty.buffer.ByteBuf;
-import io.netty.buffer.Unpooled;
 import net.minecraft.network.PacketByteBuf;
-import net.minecraft.network.RegistryByteBuf;
 import net.minecraft.network.codec.PacketCodec;
 import net.minecraft.network.codec.PacketCodecs;
 import net.minecraft.registry.RegistryKey;
@@ -21,17 +19,6 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Vec3d;
 
 public interface PacketCodecUtils {
-    PacketCodec<RegistryByteBuf, ByteBuf> REGISTRY_BUFFER = PacketCodec.of((bytes, buffer) -> {
-        int length = bytes.readableBytes();
-        buffer.writeInt(length);
-        if (length > 0) {
-            buffer.writeBytes(bytes, 0, length);
-        }
-    }, buffer -> {
-        int length = buffer.readInt();
-        return new RegistryByteBuf(length > 0 ? buffer.readBytes(length) : Unpooled.EMPTY_BUFFER, buffer.getRegistryManager());
-    });
-
     PacketCodec<PacketByteBuf, RegistryKey<?>> REGISTRY_KEY = PacketCodec.tuple(
             Identifier.PACKET_CODEC, RegistryKey::getRegistry,
             Identifier.PACKET_CODEC, RegistryKey::getValue,

src/main/resources/unicopia.mixin.json

@@ -85,7 +85,8 @@
     "seasons.MixinFertilizableUtil",
     "ad_astra.MixinApiHelper",
     "ad_astra.MixinOxygenApi",
-    "forgified.MixinIForgeBoat"
+    "forgified.MixinIForgeBoat",
+    "forgified.MixinPacketAndPayloadAcceptor"
   ],
   "client": [
     "client.MixinAnimalModel",